Hunt for Qld woman fails to yield clues

A search of waterways and a dam on a property in rural Queensland has yielded no clues to the whereabouts of a young Aboriginal woman.

Investigators haven't ruled out suspicious circumstances in the disappearance of 20-year-old Bianca Gawne, last seen at the property she shares with her family in Tandur, south of Gympie, eight days ago.

Police have searched the large property including a creek and a dam but found nothing of interest.

No searches are planned for Thursday but officers are still making enquiries and could conduct further searches.

Investigators are keeping an open mind about what may have happened but concerns for Ms Gawne's welfare are growing.

Roslyn Lewis said her granddaughter's disappearance was completely out of character.